Question

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Answer 1

ANSWER ⤵️

1/2 N2 (g) + 1/2 O2(g) ➡️ NO triangle H° = 90.2

N2 (g) + O2(g) ➡️ 2NO (g).

triangle H°= 90.2× 2........(1)

2NO(g) +O2 (g)➡️2NO2(g)

triangle H° = -114 .............(2)

2NO2(g) +1/2O2(g) ➡️ N2O2(g)

triangle H° = -102.6/2= -51.3...(3)

Now add 1+2+3

N2(g)+5/2O2(g)➡️ N2O5

triangle H°( N2O5, g) = 15.1 Kj/mol

hope it helps....✔️